I would venture to say that a bore with a snake run through it every time it's shot would be in better shape than a bore that every once in a while or never gets a brush/patch.
Also, as far as copper and lead fouling, it does fine with a few dabs of bore solvent/cleaner just before and after the brush.
Let's also keep in mind- in the real world, there are plenty of muzzles with worn rifling due to cleaning rods.
I clean mine at the range while its still hot with some solvent on the boresnake. After a few trips hunting/shooting, I feel guilty and clean it conventionally when I do a complete take down clean/lube.
I am thinking of making a switch for all of my guns to a pull through system like OTIS' tactical kit. Kind of an in-between hybrid of the snake and the rod.